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Abrasive sheathing

a technology of abrasive sheathing and abrasive layer, which is applied in the direction of other chemical processes, soldering apparatus, manufacturing tools, etc., can solve the problems of affecting the application of abrasive layer on component surfaces, requiring relatively expensive equipment, and affecting the quality of the produ

Active Publication Date: 2018-08-21
RTX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This method simplifies the attachment process, reduces processing time and labor costs, and eliminates the need for large electroplating equipment, enabling easier application on difficult-to-reach surfaces and larger industrial parts.

Problems solved by technology

While effective, the application of abrasive layers on component surfaces by electroplating may be limited by the size or structural features of the targeted surface due to line of site or current density issues.
Moreover, electroplating may require relatively expensive equipment, particularly for plating applications on larger industrial parts, such as gas turbine engine parts.
Even further, electroplating techniques may become complicated or cumbersome when dealing with larger parts and / or when complex masking / unmasking steps are required.

Method used

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Examples

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Embodiment Construction

[0033]Referring now to the drawings, and with specific reference to FIG. 1, a component 10 having a surface 11 covered with an abrasive sheath 12 is depicted (also see FIG. 3). The surface 11 of the component 10 that is covered with the abrasive sheath 12 may be a surface that is intended to cut, grind against, or otherwise contact an abradable structure 14, and the abrasive sheath 12 may enhance the abrasive properties of the surface 11 and protect it from wear. The component 10 or at least the surface 11 of the component 10 that is covered with the abrasive sheath 12 may be formed from a metallic material such as a pure metal or a metal alloy, and the abradable structure 14 may be formed from a metallic material or a nonmetallic material. Accordingly, the grinding interface between the component 10 and the abradable structure 14 may be a metal-metal interface or a metal-nonmetal interface.

[0034]As one possibility, the component 10 may be an airfoil of a gas turbine engine, such as...

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Abstract

An abrasive sheath for application to a component surface is disclosed. The abrasive sheath may comprise a metallic layer and an abrasive layer plated on a surface of the metallic layer. The abrasive layer may include a metal matrix and abrasive particles protruding from the matrix. An exposed surface of the metallic layer of the abrasive sheath may be joinable to the component surface by a heat treatment.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims priority under 35 USC § 119(e) to U.S. Provisional Patent Application Ser. No. 61 / 987,903 filed on May 2, 2014.FIELD OF THE DISCLOSURE[0002]The present disclosure generally relates to abrasive sheaths, and more specifically, relates to abrasive sheaths for application to various component surfaces, such as the tips of turbine blades in a gas turbine engine.BACKGROUND[0003]In situations where the surfaces of metallic components engage and grind against one another, one or more of the contacting surfaces may be coated with an abrasive layer containing abrasive particles. The abrasive layer may act to protect the contacting surface of the component from wear, while enhancing the cutting / grinding strength of the component. For example, certain cutting instruments or grinding tools used in machining applications may have a cutting / grinding surface coated with such an abrasive layer. Similarly, the tips of rotating airfoi...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B24D3/00B23K35/32B23K1/00F01D5/28B24D3/06F01D5/20B23K35/00C09K3/14B24D18/00F01D11/12B24D11/00B24D3/02B23K101/00
CPCF01D5/288B23K1/0018B23K35/004B23K35/327B24D3/06F01D5/20B23K2101/001F05D2300/177F01D11/122F05D2220/32F05D2230/40F05D2240/307F05D2300/11
Inventor STRATTON, ERIC W.MINOR, MICHAEL J.
Owner RTX CORP